Saab 9-5 Aero and intercooler efficiency

This is Saab 9-5 AeroSentronic with OEM intercooler, and thanks to the data via OBD indicates the efficiency of the intercooler when accelerating to 230km/h. Outside temperatures 14-15 degrees Celsius and 68% humidity.

Intercooling is a method used to compensate for heating caused by supercharging, Increased air pressure can result in an excessively hot intake charge, significantly reducing the performance gains of supercharging due to decreased density. By cooling the intake air, the air is more dense and thus has more oxygen, allowing the engine to burn more fuel in each cylinder, and increasing power: